In 2013, Graham designed a lingerie line for Addition Elle, a Canadian plus-size clothing retailer.[23] Graham also appeared on MTV's Made, as a coach for an aspiring plus-size model.[9] Graham appeared on the May 2014 issue for international's Harper's Bazaar pre-fall collection and beauty editorial.[24] Graham was the cover model on the June 2014 issue of Elle Quebec.[25] In 2015, swimsuitsforall, a plus-size retailer for women's swimsuits, featured Graham in an advertisement in Sports Illustrated's annual swimsuit issue. The ad was part of swimsuitsforall's #CurvesInBikinis campaign in which Graham was one of the first plus-size models to appear in the pages of the Sports Illustrated Swimsuit Issue.[26] In 2016, she became the first plus-size model to appear on the cover of the Sports Illustrated Swimsuit Issue. She was also featured in DNCE's music video for "Toothbrush".[27]

In 2017, Graham released a book, A New Model: What Confidence, Beauty, and Power Really Look Like. In this memoir, she provides insight into her experiences as a model and as an advocate for body positivity.[28] Graham additionally shares, in her book, her prospects for the evolution of body image in years to come.

Graham has been announced as the host of the second season of American Beauty Star.[29]

Graham is a proponent of the body positivity[30][31][32][33] and the Health at Every Size movements.[34][35][36] In 2016, Graham became the first size 16 model to be featured on the cover of Sports Illustrated Swimsuit Issue. Glamour described Graham's Sports Illustrated Swimsuit cover as "bringing size acceptance into the mainstream". Graham gave a TED Talk advocating for self-acceptance with regards to body images, which included Graham looking into a full-length mirror and having a friendly chat with her body parts making comments such as: “Back fat, I see you popping over my bra today. But that’s all right. I’m gonna choose to love you.” [31][37] Graham has been praised by women on Instagram for sharing photos showing her cellulite.[38] In an interview with Vogue, Graham said "I definitely think that my body has changed many peoples’ lives. I’ve used my body as a tool to talk about taboo subjects, such as cellulite or being insecure about lower belly fat—and also [how to] talk life into your body and have an affirmation kind of conversation with yourself. And I know the lives that have been changed: young girls and even women my age who have written me and said, 'I never loved the skin that I was in until I heard your journey'."[30] Graham has stated she does not prefer the term "plus-size" saying, "I think that when you use the word 'plus-size' you're putting all these women into a category: 'You don't eat well.' 'You don't work out.' 'You could care less about your body.' 'You're insecure.' 'You have no confidence.' And that is none of this (pointing at her body)", furthering "The fashion industry may persist to label me as 'plus-size,' but I like to think of it as 'my size."[39]